public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    /* Enter your code here. Print output to STDOUT. */

    boolean isPolindrome = true;
    for(int i = 0 ; i < A.length() ; i++){
        if(A.charAt(i) != A.charAt(A.length() - 1 - i)){
            isPolindrome = false;
            break;
        }
    }

    if(isPolindrome){
        System.out.println("Yes");
    }else{
        System.out.println("No");  
    }

}

}